Signed exposure report under the caller's own risk model (PAID $3.00)

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already declare readOnlyHint=false, openWorldHint=true, and idempotentHint=false, so the safety profile is partly covered. The description adds genuinely useful behavioral facts not in the annotations: the call costs 3.00 USD, paid via x402 on base/USDC (eip155:8453), and is a POST to /v1/portfolio/risk. It still omits what happens on payment failure or how signing/attestation is produced.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

It is short and front-loaded, but the first sentence is a verbatim copy of the title, so half the description is spent restating metadata rather than adding information. The route/payment line earns its place; the opening sentence does not.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

An output schema exists, so return values need not be explained. However, with three undocumented parameters, no usage guidance, and no explanation of how the 'signed' report is produced or verified, the definition is too thin for a paid, non-idempotent, open-world mutation-shaped call.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 0% across all three parameters (as_of, model, positions), so the description carries the full explanatory burden. Only 'model' is obliquely implied by 'caller's own risk model'; the required shape of positions and the expected format of as_of are never described.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description identifies the resource (a signed exposure report computed under the caller's own risk model) but the verb is implicit — it never says 'compute' or 'generate'. With ~130 siblings including v1_pretrade_risk, v1_quant_risk_of_ruin, and v1_counterparty_score, no differentiation is offered, so an agent cannot tell why it should pick this exposure report over those risk tools.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

There is no when-to-use guidance, no prerequisites, and no named alternative. The only selection-relevant facts are the price and the remote route, which tell the agent about cost but not about fitness for a task versus the many other risk-scoring siblings.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.